Propulsion engines
C7.1
The C7.1 marine propulsion engine is ideal for recreational boating applications, specifically smaller vessels and motoryachts ranging from 25 -60 feet in size. The engine features a common rail fuel system enabling optimum combustion and low emissions. The engines provide noticeably quiet operation due to reduced combustion noise through advanced electronic control. Additionally, no visible smoke is emitted from the C7.1 engines during operation.
| Power Range | 400 - 500 bhp (298 - 373 bkW) |
|---|
| Speed Range | 2900 rpm |
|---|---|
| Rotation from Flywheel End | Counterclockwise |
| Bore | 4.13 in |
| Stroke | 5.31 in |
| Aspiration | Turbocharged - Aftercooled |
| Displacement | 428 in³ |
| Configuration | In-line 6, 4-Stroke-Cycle Diesel |
| Emissions | IMO II, U.S. EPA Tier 3, RCD II, China II |
| Width - Engine | 31.4 in |
|---|---|
| Height | 34.5 in |
| Engine Dry Weight - Approximate | 1676 lb |
| Length - Engine | 43.1 in |
Exhaust System
- Water cooled turbocharger and exhaust manifold
Fuel System
- Common rail fuel system
- Fuel cooler
- Electric fuel priming pump
Cooling System
- Corrosion resistant sea water aftercooler
- Gear driven sea water pump (rubber impeller)
- Fin and tube type jacket water heat exchanger
Starting System
- Starter motors - 12V or 24V
General
- Closed crankcase ventilation system
- Integral engine oil cooler
- Vibration damper and guard
- Self-tensioning multi-vee alternator drive belt
Mounting System
- Front and rear engine mounting brackets
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Download ↓C7.1 Marine High Performance Engine Spec Sheet (298 - 373 bkW)
Need installed dimensions with enclosure and tank? See Model Configurations